Machine for welding chain-links.



PATBNTBD JULY 2, 1907.

4SHEBTS-SHEET l.

L. ROBHR. MACHINE FUR WELDING CHAIN LINKS APPLLOATION -I'ILED JAN. 25. 1907.

No. 858,758. PATBNTBD JULY; 2. 1907.

L. MEHR.

MACHINE FOR WELDING'GHAIN LINKS.

\ APrLloATIoN FILED Ju.s5.1oo1.

4 SHEETS-SHEET z.

No. 858,758. PATIIN'IBD JULY 2, 1907. L. ROBHR.

MACHINE FOR WELDING CHAIN LINKS.

APPLIOATIONIILBD M125. 19d-v 4 SHEETS-SHEET 3.

No. 858,753. PATLNTED JULY 2, 1907. L. RoLHR. f

MACHINE FOR WELDING CHAIN. LINKS.

APPLICATION FILED JAN. 25. 1907.

l 4 4 SHEETS-SHEET L 7F 5. Z355 -////////7 t WTNESSES UNITED sfrnile PATENT oEEIeE.

LOUIS ROElllt, OF STAMFOR-D, CONN 'OTIOUT, ASSIGNOR TO THE YALE c TOWN E MANUFAC- TURING COMPANY, OF STAMFORD, CONNECTICUT,

MACHINE non WELDING CHAIN-LINKS.

Applicatioiriiled January 25,1907. Serial No. 354,115..

To all whom it may concern:

3e it known that l, Louis Ronnn, of Stamford, in .the county ol .Fairlield and State ol Connecticut, have invented certain new and `useful improvements iu ltluchnes ior Welding Chain-Links; and I do hereby declare the iollowing to be a iull, clear, and exact description ol the invention, such as will ena-ble others skilled in the art to` which it appertains to make and use the saune.

My invention relates to an. improvement in machines i or welding chain. links, zuid is designed as an improvement on th'e machine and method disclosed in Patent 829,295, granted The Yale and 'lowne Mig. Co.,A

August 21st, 1906.` ln the 'machine disclosed in the patent above reierrod to, the Iink'being welded is clamped in a rocking support, and the latter ,is rocked during the welding operation thus producing a weld without projecting tins. ln some types oi chains, where the gage of the chain oizthe length oi the link is not suilicient, this working oi'the link is impracticnble, zuid the object ol this invention is to provide a machine whereby the links may be welded and the tins formed duringr the operation, be removed before the completion oi said operation, without rocking or otheiwise moving the link, and myinvention censists oi. the parts and combinations ol' parts as will beV more fully hereinafter described and pointed out in the claims.

ln the accompanying drawings, Figure 1 is a view in side elevation of a machine embodyingmy invention, a part'of the frame being broken away to show the operating mechanism. Fig. 2 is aview in iront elevation, the llever arms which actuatc the rack hais being omitted. Fig. 3 is o. view iu section on the line B B of Fig. 2, showing simply the freine of the machine. and the clamp thereon. Fig. l is a view in section on the line G C oi Fig. 2 showing paris of the trame and the rack bar engaging the pinion of the upper die. Figs. 5

and 6 are two views in elevation showing the two positions of the dies and Figs. 7, S, 9, 10 andll are each a. view in elevation und transverse section, showing the link in its several stages, from the time it is clamped in the machine to the completion oi the welding operation.

1 represents a irame oi any suitable design provided at its base with ilanges by which it is secured to a suitable support. This fiume-is provided about midway Specification of Letters Patent.

Patented July 2, 190'?.

nected. This cross head 7 is mounted to move ver' tically in guideways 8 on frame l and carries at its lower end the die 9, the latter being mounted in the cross head so that it can be revolved. The die can be mounted directly in the cross head, or it can be detachably secured to a rota-ry holder carried by the cross head. 'lhe revolution of this die is accomplished by ine-ans o1' the cam l0 secured to shaft 3, and engaged by the cam roller l1 on the upper end of lever l2. This nger is pivoted to haine ll at 13, and is connected at its lower end to the rack bnr 14 which latter is supported and guided in ils movements by suitable guides at the sides of the frame l. This rack bur meshes with the pinion l5 lust on the rotary die holder or stem of the die 9 as the case may be.

Connected to the lower end of lever 12 is the lever-1G pivoted at 17, and connected at its lower end tothe rack bar 18, which is in mesh with pinion 19 inst to the die 20 or die holder. This die holder or stem is mounted to rotate in a cross head 2l, similar to the cross head 7, and which is mounted to move in the portion oi the frame below the table 2, and this cross head 21 is connected b y the arm 22 and strap 23 with the eccentric 24 on sha-it 25, the latter being mounted near the'base oi the ira-me 1, und connected up with shaft 3 by 4shaft 29 and pinions 30 and 3l, so as to rotate in unisonitherewith.

By re'lerring to Figs. 5 and 6 it will be seen that each ol the dies is provided with two [lat faces 26 and 27 located in different planes, whichiaces will herein alter be designated as high and low faces. Between the high and low facie of each die, is a curved face 28 conforming to the size oi the link being operated upon.

-When the dies are brought together as shown, say iu F ig; :3, two fins are produced as therein indicated, one being above and the other below the horizontal center oi the link. When the dies, are turned 180 degrees, asv they Iare in the operation of the machine, there-lation of REISSUED the high and low laces on the upper and lower dios or hammer and anvil will be changed as shown in Fig. and it is evident that the temlency ol this clnuige in the faces is to fold in the iins'produced by the Iirst squeeze or blow, or cut them oli, and by a second or more turns oi the dies, or hammer and anvil a perfect and smooth weld is produced. v

ln the operation oi the device the link shown in Fig. 7 to be welded, is placed within a chunp oi an y preferred iorm with the joint in a plane with the dies. 'lhe welding heat is produced by electricity, or by any proper means, mid while in its heated condition nud clamped, the two nbuti ing ends ol the link are forced into contact producing the bulge shown in Fig. 8, and the link is in this condition prior to the first stroke oi the dies. 'Aitor the irst stroke, a .fin is formed ou one side between the high feces oi the dies and on the other side by the low los laces, thus producing izwo fins in different horizontal planes. The partswiii lire-,n hein condition and position as shown in Figfl. li sliaft he Vhowl-evolved in the direction oi the arrow, i t will iirst operate to elevate the npper die and lower the lower die until thesuriaces oi the dies are vicar ol the iinit. As soon as theeecentricii-yof the cam i() 'begins io aci. on roller ll., it will more the lower end oi lever l2 to the right and the lower end of leverlii to iheleii., thus causing raelt'bnr 14 whieirisconnceted to izhelower end of lever 'i2 and the rackbar 18,

Connected lo the lower end oi lever 1G, to rotate their respective pinions hail' a revolution or 180 degrees in opposite directions, thus bringing the high ace on the lower die nnder the low iin and the low facehnder the higher lin. These rot-ary movements of the dies occur when the iai ler is ont of Contact with the iinlr, and after the lies have been thus rol-ated, they are again forced foward nach other, the changed portions of the high and low laces on the dies operating to fold in or ent off the lios, so that. alter two or more blowsl or squeeze, as the case may be, a. peri eci; weld without anyins results.

While I have shown the improvement in connection with a press, it. will be clearly evident'. that a hammer and a nvil will produce precisely the same result, hence I would have irf`ilmlci'si0od that, the use of the term dies intended to include hammer and anvil or any equivalent mechanism thai. will produce the result attained by thclnechanism shown. Again whileli'ia-vedesel'ibed ihrx improvement in connection with a link welding machine, it is equally applicable to welding straight; hars..

'lt is evident that man)r slight changes might be resorted lo in the relative arrangement oi parts-shown and described without departing [rom the spirit and seopooimy inventioniiencel would have il understood that l do noi. wish to confine myself io the exact construction oi parts sho wn and d cscri bed, but.,

Haring lolly describedhiy invention what I claim as new and desire to .secure by Letters laioni., is:'

1A in a machine for welding. the combination with means for holding the members to be welded, of two dies located to operate against opposite sides of the members ,being welded, each die bovini.; o recessed section' 11nd high means for holding the members to be welded, of two dies.-

iocatcd to operate against opposite sides of; said members,

each dic harim,y a recess. and high and low faces, the high and low faces ot' each die enacting respectively with the high and low faces of the other die, means fo'r moving fthe dies toward and away from each other and means for partly rotating cach die.

3. in a machine' for welding the combination with. means for holdim,r the members to be welded, ot two dies located to'opernte against opposite sides oi' said members, each die having a recess and high and' low faces, the high face of-.each die being normally in line with the high face of the other die, and thc inw face of one dic being nornmily in line with the low face of the other die. menus for moving the dies toward and away from each other, and means for simultaneously rotatim,r both dies half n revo iniion in opposite directions. i

4. in a machine for welding, the combination with means for hoidimgr the members to be welded, oftwo welding tools each havin),Y a recess und high and low [aces whereby the fins formed by the compression of the members between the tools will be in different pianos, and means for reversing the position of the high-and low faces on the welding; fools whereby the fins formed fon the members by the first compression will he folded in or cnt oil? by subsequent compressions. 5'.`in u machine for welding the combination with means for holdlm the members to he welded, of two weldim; tools eaeirhavlm: a recessand Ahigh and low faces, the high and low faces on one tool being normally opposite the high and low face on the other, means for moving said,

tools toward and away from each other, and means for reversing the positions of the high and low faces, whereby the fins formed on thc members by the first compression will he folded in or ent oiilby subsequent' compression.

in testimony whereof. i have signed this specification in the presence of two subscribingwitnesses. 

